Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia
Bud Rot is a disease affecting most of the oil palm materials planted (Elaeis guineensis Jacq.) no matter the palm's age. In spite of the fact that in the Llanos Orientales, the disease is not of lethal nature, it has indeed become a serious economic constraint for this crop given the accumulated incidence has achieved levels of more than 90% in a short period of time and affected plots remain unproductive for many years. A study was conducted to help determine if the sub-region of San Carlos, located south of the Department of Meta and where the crop is as important as in other regions, presents similar conditions to those found in Cumaral and Bajo Upía with respect to soil conditions and disease. The mentioned study was carried out in 111.5 hectares of Los Araguatos plantation where the disease was at the highest progressive stage. The disease's dynamics was established through time (June 1999 to December 2004) and in space by means of epidemiological studies. The physical and chemical characteristics of the first soil horizon were studied, by means of a systematic sample in a fixed grid, each quadrant representing 1.27 hectares. The Stepwise multiple linear regression models and the analysis of major components were used to establish the degree of association between the disease's growth rate and each one of the assessed edaphic variables. The soils were grouped in five taxonomic sub-groups and the disease growth rate was found to be different among them; the lowest disease progress rates were found in an Oxic Dystrudept and the highest ones in an Aquic Dystrudept. Aluminum (Al) saturation was found to be one of the properties highly related to disease growth rate with a positive linear relationship (R2 = 0,60). Mg and K saturation were other parameters found that were highly related to Bud Rot growth rate, which were described by negative linear regressions (R2 of 0.97 and 0.80 respectively). These results confirm the relationships between the soil and the disease progress found by the same research group in other areas of the Llanos Orientales
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2007
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Cristancho R., José Á. Castilla C., Carlos E. Rojas M., Maricela Munevar M., Fernando Silva Ch., José H. |
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Cristancho R., José Á. Castilla C., Carlos E. Rojas M., Maricela Munevar M., Fernando Silva Ch., José H. Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
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Cristancho R., José Á. Castilla C., Carlos E. Rojas M., Maricela Munevar M., Fernando Silva Ch., José H. |
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Cristancho R., José Á. |
| title |
Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
| title_short |
Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
| title_full |
Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
| title_fullStr |
Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
| title_full_unstemmed |
Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia |
| title_sort |
relationship between saturation of al, mg, k and incidence of bud rot in oil palm at east region of colombia |
| description |
Bud Rot is a disease affecting most of the oil palm materials planted (Elaeis guineensis Jacq.) no matter the palm's age. In spite of the fact that in the Llanos Orientales, the disease is not of lethal nature, it has indeed become a serious economic constraint for this crop given the accumulated incidence has achieved levels of more than 90% in a short period of time and affected plots remain unproductive for many years. A study was conducted to help determine if the sub-region of San Carlos, located south of the Department of Meta and where the crop is as important as in other regions, presents similar conditions to those found in Cumaral and Bajo Upía with respect to soil conditions and disease. The mentioned study was carried out in 111.5 hectares of Los Araguatos plantation where the disease was at the highest progressive stage. The disease's dynamics was established through time (June 1999 to December 2004) and in space by means of epidemiological studies. The physical and chemical characteristics of the first soil horizon were studied, by means of a systematic sample in a fixed grid, each quadrant representing 1.27 hectares. The Stepwise multiple linear regression models and the analysis of major components were used to establish the degree of association between the disease's growth rate and each one of the assessed edaphic variables. The soils were grouped in five taxonomic sub-groups and the disease growth rate was found to be different among them; the lowest disease progress rates were found in an Oxic Dystrudept and the highest ones in an Aquic Dystrudept. Aluminum (Al) saturation was found to be one of the properties highly related to disease growth rate with a positive linear relationship (R2 = 0,60). Mg and K saturation were other parameters found that were highly related to Bud Rot growth rate, which were described by negative linear regressions (R2 of 0.97 and 0.80 respectively). These results confirm the relationships between the soil and the disease progress found by the same research group in other areas of the Llanos Orientales |
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2007 |
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https://publicaciones.fedepalma.org/index.php/palmas/article/view/1209 |
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oai:ojs.pkp.sfu.ca:article-12092019-04-23T05:00:00Z Relationship between saturation of Al, Mg, K and Incidence of bud rot in oil palm at east region of Colombia Relación entre la saturación de Al, Mg, K y la tasa de crecimiento de la pudrición de cogollo de la palma de aceite en la Zona Oriental Colombiana Cristancho R., José Á. Castilla C., Carlos E. Rojas M., Maricela Munevar M., Fernando Silva Ch., José H. palma de aceite elaeis guineensis pudrición del cogollo enfermedades de las plantas medidas fitosanitarias fertilidad del suelo nutrientes minerales protección de las plantas magnesio potasio aluminio fertilizantes Colombia Bud Rot is a disease affecting most of the oil palm materials planted (Elaeis guineensis Jacq.) no matter the palm's age. In spite of the fact that in the Llanos Orientales, the disease is not of lethal nature, it has indeed become a serious economic constraint for this crop given the accumulated incidence has achieved levels of more than 90% in a short period of time and affected plots remain unproductive for many years. A study was conducted to help determine if the sub-region of San Carlos, located south of the Department of Meta and where the crop is as important as in other regions, presents similar conditions to those found in Cumaral and Bajo Upía with respect to soil conditions and disease. The mentioned study was carried out in 111.5 hectares of Los Araguatos plantation where the disease was at the highest progressive stage. The disease's dynamics was established through time (June 1999 to December 2004) and in space by means of epidemiological studies. The physical and chemical characteristics of the first soil horizon were studied, by means of a systematic sample in a fixed grid, each quadrant representing 1.27 hectares. The Stepwise multiple linear regression models and the analysis of major components were used to establish the degree of association between the disease's growth rate and each one of the assessed edaphic variables. The soils were grouped in five taxonomic sub-groups and the disease growth rate was found to be different among them; the lowest disease progress rates were found in an Oxic Dystrudept and the highest ones in an Aquic Dystrudept. Aluminum (Al) saturation was found to be one of the properties highly related to disease growth rate with a positive linear relationship (R2 = 0,60). Mg and K saturation were other parameters found that were highly related to Bud Rot growth rate, which were described by negative linear regressions (R2 of 0.97 and 0.80 respectively). These results confirm the relationships between the soil and the disease progress found by the same research group in other areas of the Llanos Orientales La Pudrición de cogollo es una enfermedad que afecta a la mayoría de los materiales sembrados de palma de aceite (Elaeis guineensis Jacq.) y en todas las edades del cultivo. Aunque en los Llanos Orientales la enfermedad no es de carácter letal, se ha convertido en uno de los principales limitantes económicos del cultivo, ya que la incidencia acumulada ha llegado a niveles superiores del 90% en corto tiempo y los lotes afectados permanecen improductivos por varios años. Se adelantó un estudio para determinar sí en la subregión de San Carlos de Guaroa, ubicada al sur del Meta, y donde el cultivo es igualmente importante, se presentan asociaciones similares a las encontradas en Cumaral y el Bajo Upía entre las características del suelo y la enfermedad. El estudio se realizó en 111,5 hectáreas de la plantación Los Araguatos, en la cual la enfermedad se encontraba en la etapa de mayor progreso. Mediante estudios epidemiológicos, se estableció la dinámica de la enfermedad a través del tiempo (junio de 1999 a diciembre de 2004) y en el espacio. Se estudiaron las propiedades físicas y químicas del primer horizonte del suelo, mediante un muestreo sistemático en cuadrícula fija, en donde cada cuadrante representaba 1,27 hectáreas. Se estableció el grado de asociación entre la tasa de crecimiento de la enfermedad y cada una de las variables edáficas evaluadas, por medio de análisis de componentes principales y modelos de regresión lineal múltiple Stepwise. Los suelos se agruparon en cinco subgrupos taxonómicos y se encontró que entre ellos la tasa de crecimiento de la enfermedad fue diferente; las menores tasas de progreso de la enfermedad se encontraron en un Oxic Dystrudept y las mayores en un Aquic Dystrudept. Entre las propiedades químicas más relacionadas con la tasa de crecimiento de la enfermedad, se encontró la saturación de aluminio (Al), con una relación lineal positiva (R2= 0,60) como otros parámetros asociados, se hallaron la saturación de Mg y de K, cuya relación con la tasa de crecimiento de Pudrición de cogollo se describió por regresiones lineales negativas (R2 de 0,97 y 0,80 respectivamente). Los resultados ratifican las relaciones entre el suelo y el progreso de la enfermedad que se han encontrado por el mismo grupo de investigación en otras áreas de los Llanos Orientales. Fedepalma 2007-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://publicaciones.fedepalma.org/index.php/palmas/article/view/1209 Palmas; Vol. 28 Núm. 2 (2007); 25-35 2744-8266 spa https://publicaciones.fedepalma.org/index.php/palmas/article/view/1209/1209 Derechos de autor 2017 Revista Palmas |